2.5V Or 3.3V, 200-MHz, 1:12 Clock
Distribution Buffer

The CY29948 is a low-voltage 200-MHz Clock DistributionBuffer with the capability to select either a differential LVPECL
or a LVCMOS/LVTTL compatible input Clock The two Clock
sources CAN be used to provide for a test Clock as well as the
primary system Clock All other control inputs are
LVCMOS/LVTTL compatible. The 12 outputs are LVCMOS or
LVTTL compatible and CAN drive 50, series or parallel termi-
nated transmission lines. For series terminated transmission
lines, each output CAN drive one or two traces giving the device
an effective fanout of 1:24. The outputs CAN also be
three-stated via the three-state input TS#. Low
output-to-output skews make the CY29948 an ideal Clock
distribution Buffer for nested Clock trees in the most
demanding of synchronous systems. By Cypress Semiconductor Corp.